Locksmiths might not be able to program fobs for every brand. Another option is to buy a key fob online and then have it programmed at a dealership or by a locksmith.

And that’s just for the fob. Add another $50 to $100 to get replacement fobs programmed to work with your car and to have a new mechanical backup key made.

The key fob is your lifeline to your car, letting you unlock the doors and set off the alarm, at a minimum, but how can you tell if it needs a new battery?

Just know that most customer-programmable key fobs will require two current working keys in order to program the new one. RELATED: How to replace your key fob | Your key fob may have hidden features ...

Like anything else relying on a battery, you car key fob can die—often at the worst time. Thankfully, these batteries are easy to replace.

When your Honda key fob runs out of battery, you can take it to a dealership, but it's pricey. It's much cheaper and not too difficult to do it yourself.

Watch this video to see how to change the battery in your key fob. How to replace car key battery Most key fobs have a little slot you can use to pop them open with a small flatheaded screwdriver ...

How to un-filth your keys Whether you still drive a car that uses a physical flat key or you have a fancy car with an electronic fob, cleaning them regularly is a great idea.

Thieves can hack key fobs and steal cars using signal boosting. Here's how to prevent your key fob from being hacked.